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https://issues.apache.org/jira/browse/HADOOP-3139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12584946#action_12584946
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Konstantin Shvachko commented on HADOOP-3139:
---------------------------------------------
+1
> DistributedFileSystem.close() deadlock and FileSystem.closeAll() warning
> ------------------------------------------------------------------------
>
> Key: HADOOP-3139
> URL: https://issues.apache.org/jira/browse/HADOOP-3139
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Priority: Blocker
> Fix For: 0.17.0
>
> Attachments: 3139_20080331.patch, 3139_20080402b.patch
>
>
> Koji found the following:
> *DistributedFileSystem.close() deadlock*
> My dfs -ls hang.
> Ctrl-Z showed a deadlock state.
> {noformat}
> "Thread-0":
> at
> org.apache.hadoop.dfs.DistributedFileSystem.close(DistributedFileSystem.java:190)
> - waiting to lock <0xedde8788> (a
> org.apache.hadoop.dfs.DistributedFileSystem)
> at
> org.apache.hadoop.fs.FileSystem$Cache.closeAll(FileSystem.java:1231)
> - locked <0xee0baf88> (a org.apache.hadoop.fs.FileSystem$Cache)
> at org.apache.hadoop.fs.FileSystem.closeAll(FileSystem.java:169)
> at
> org.apache.hadoop.fs.FileSystem$ClientFinalizer.run(FileSystem.java:154)
> - locked <0xee0bae40> (a
> org.apache.hadoop.fs.FileSystem$ClientFinalizer)
> "main":
> at org.apache.hadoop.fs.FileSystem$Cache.remove(FileSystem.java:1201)
> - waiting to lock <0xee0baf88> (a
> org.apache.hadoop.fs.FileSystem$Cache)
> at org.apache.hadoop.fs.FileSystem.close(FileSystem.java:1085)
> at
> org.apache.hadoop.dfs.DistributedFileSystem.close(DistributedFileSystem.java:192)
> - locked <0xedde8788> (a org.apache.hadoop.dfs.DistributedFileSystem)
> at org.apache.hadoop.fs.FsShell.close(FsShell.java:1698)
> at org.apache.hadoop.fs.FsShell.main(FsShell.java:1712)
> Found 1 deadlock.
> {noformat}
> *FileSystem.closeAll() warning*
> {noformat}
> 08/03/31 16:48:42 INFO fs.FileSystem: FileSystem.closeAll() threw an
> exception:
> java.io.IOException: HftpFileSystem([EMAIL PROTECTED]) and
> Key([EMAIL PROTECTED]://namenode-nn:4444) do not match.
> {noformat}
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